1. PrinterStatus implemented, used by printers, shown in ModelessDlg, 2. 'Simulated' printers, 3. Label.Printer uses wm.PrintLabel.

TBF/Rig/Output/Printers/Enhanced/Printer.cs

@@ -3,9 +3,10 @@
 ///
 using System;
 using System.Collections.Generic;
-using System.Drawing.Printing;
 using System.Globalization;
 using System.Threading;
+using Common;
+using Common.Forms;
 using Results.Output.Printers.Enhanced;
 using log4net;
 
@@ -31,6 +32,10 @@ namespace TBF.Rig.Output.Printers.Enhanced
 		IList<Results.WMeterRsltItemSpec> testItems;
 		string footer;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
+
 
         public Printer() { }
 
@@ -43,8 +48,17 @@ namespace TBF.Rig.Output.Printers.Enhanced
         public override void Initialize()
         {
             ApplyConfig();
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
                 log.FatalFormat("{0} initialized: {1}", Name, this);
             }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
+        }
 
         void ApplyConfig()
 		{
@@ -132,8 +146,29 @@ namespace TBF.Rig.Output.Printers.Enhanced
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
+        }
 
+		/// <summary>Run this operation</summary>
+		/// <returns>Event.ResultsPrinted</returns>
+		public Event Run()
+		{
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
+
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
                 if (printerCfg.Culture != Culture.system)
                 {
                     Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
@@ -153,13 +188,21 @@ namespace TBF.Rig.Output.Printers.Enhanced
                 PrintResults(batch, documentName);
 
                 Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
                 }
 
-		/// <summary>Run this operation</summary>
+                return Event.Busy;
-		/// <returns>Event.ResultsPrinted</returns>
+            }
-		public Event Run()
-		{
-			return Event.ResultsPrinted;
         }
 
         /// <summary>Stop this operation</summary>
@@ -206,7 +249,7 @@ namespace TBF.Rig.Output.Printers.Enhanced
                 for (int i = 1; i <= printerCfg.NrOfCopies; i++)
                 {
                     string docName = string.Format(((printerCfg.NrOfCopies == 1) ? "{0}" : "{0}-{1}"), documentName, i);
-                    var pd = new Results.Output.Printers.Enhanced.EnhancedPrintDocument(batch, cfg, docName);
+                    var pd = new EnhancedPrintDocument(batch, cfg, docName);
                     if (!string.IsNullOrEmpty(printerCfg.PrinterName)) pd.PrinterSettings.PrinterName = printerCfg.PrinterName;
                     pd.Print();
                 }

TBF/Rig/Output/Printers/Label/Printer.cs

@@ -6,6 +6,8 @@ using System.Collections.Generic;
 using log4net;
 using System.Globalization;
 using System.Threading;
+using Common;
+using Common.Forms;
 using Results.Output.Printers.Label;
 
 namespace TBF.Rig.Output.Printers.Label
@@ -19,14 +21,11 @@ namespace TBF.Rig.Output.Printers.Label
 
 		public bool SupressPrinting { get { return (printerCfg.NrOfCopies == 0); } }
 
-		/// <summary> Data to print </summary>
+		Results.Entities.Batch batch;					/// Data to print
-		Results.Entities.Batch batch;
+        IList<Results.WMeterRsltItemSpec> commonItems;  /// Items to print
-
+		bool printingCompleted = false;
-		///
+        bool statusDlgShown = false;
-		/// Items to print
+        ModelessForm modelessForm;
-		///
-		IList<Results.WMeterRsltItemSpec> commonItems;
-
 
         public Printer() { }
 
@@ -39,8 +38,17 @@ namespace TBF.Rig.Output.Printers.Label
         public override void Initialize()
         {
             ApplyConfig();
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
                 log.FatalFormat("{0} initialized: {1}", Name, this);
             }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
+        }
 
         void ApplyConfig()
 		{
@@ -108,8 +116,29 @@ namespace TBF.Rig.Output.Printers.Label
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
+        }
 
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
+		{
+			string message;
+			if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+			{
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+			{
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
+
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
                 if (printerCfg.Culture != Culture.system)
                 {
                     Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
@@ -117,20 +146,28 @@ namespace TBF.Rig.Output.Printers.Label
 
                 foreach (var wm in batch.WaterMeters)
                 {
-                if (wm != null && (!printerCfg.GoodOnly || wm.Passed))
+                    if (wm != null && !wm.Disabled && wm.PrintLabel && (!printerCfg.GoodOnly || wm.Passed))
                     {
                         PrintResults(batch, wm, string.Format("{0}-{1}", batch.BatchNr, wm.WMPosition));
                     }
                 }
 
                 Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+			{
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
                 }
 
-		/// <summary>Run this operation</summary>
+                return Event.Busy;
-		/// <returns>Event.ResultsPrinted</returns>
+			}
-		public Event Run()
-		{
-			return Event.ResultsPrinted;
 		}
 
 		/// <summary>Stop this operation</summary>

TBF/Rig/Output/Printers/MultiLabel/Printer.cs

@@ -3,9 +3,11 @@
 ///
 using System;
 using System.Collections.Generic;
-using log4net;
 using System.Globalization;
 using System.Threading;
+using log4net;
+using Common;
+using Common.Forms;
 using Results.Output.Printers.MultiLabel;
 
 namespace TBF.Rig.Output.Printers.MultiLabel
@@ -27,6 +29,10 @@ namespace TBF.Rig.Output.Printers.MultiLabel
 		///
 		IList<Results.WMeterRsltItemSpec> commonItems;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
+
 
         public Printer() { }
 
@@ -39,8 +45,17 @@ namespace TBF.Rig.Output.Printers.MultiLabel
         public override void Initialize()
         {
             ApplyConfig();
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
                 log.FatalFormat("{0} initialized: {1}", Name, this);
             }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
+        }
 
         void ApplyConfig()
 		{
@@ -112,8 +127,29 @@ namespace TBF.Rig.Output.Printers.MultiLabel
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
+        }
 
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
+		{
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
+
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
                 if (printerCfg.Culture != Culture.system)
                 {
                     Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
@@ -122,13 +158,21 @@ namespace TBF.Rig.Output.Printers.MultiLabel
                 PrintResults(batch, string.Format("{0}", batch.BatchNr));
 
                 Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
                 }
 
-		/// <summary>Run this operation</summary>
+                return Event.Busy;
-		/// <returns>Event.ResultsPrinted</returns>
+            }
-		public Event Run()
-		{
-			return Event.ResultsPrinted;
         }
 
         /// <summary>Stop this operation</summary>

TBF/Rig/Output/Printers/Munich/Printer.cs

@@ -2,12 +2,12 @@
 /// Copyright (c) 2013-2023 Sensus Slovensko a.s.
 ///
 using System;
-using System.Collections.Generic;
-using System.Drawing;
-using System.Drawing.Printing;
 using log4net;
-using Config.Entities;
+using Common;
-using TBF.Rig;
+using Common.Forms;
+using Results.Output.Printers.Munich;
+using System.Globalization;
+using System.Threading;
 
 namespace TBF.Rig.Output.Printers.Munich
 {
@@ -24,6 +24,10 @@ namespace TBF.Rig.Output.Printers.Munich
 		/// <summary> Data to print </summary>
 		Results.Entities.Batch batch;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
+
         public string Version { get { return printerCfg.Version; } }
 
 
@@ -37,8 +41,17 @@ namespace TBF.Rig.Output.Printers.Munich
 
         public override void Initialize()
         {
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
                 log.FatalFormat("{0} initialized: {1}", Name, this);
             }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
+        }
 
 
         /// <summary>Events:  ResultsPrinted</summary>
@@ -54,20 +67,50 @@ namespace TBF.Rig.Output.Printers.Munich
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-			foreach (var wm in batch.WaterMeters)
+            printingCompleted = false;
-			{
+            statusDlgShown = false;
-                var pd = new Results.Output.Printers.Munich.MunichPrintDocument(printerCfg.Version, wm, printerCfg.PageOrientation);
-                if (!string.IsNullOrEmpty(printerCfg.PrinterName)) pd.PrinterSettings.PrinterName = printerCfg.PrinterName;
-                pd.Print();
-            }
         }
 
         /// <summary>Run this operation</summary>
         /// <returns>Event.ResultsPrinted</returns>
         public Event Run()
+		{
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
             {
                 return Event.ResultsPrinted;
             }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
+
+                /// Printer is online  =>  Print results now
+                foreach (var wm in batch.WaterMeters)
+                {
+                    var pd = new MunichPrintDocument(printerCfg.Version, wm, printerCfg.PageOrientation);
+                    if (!string.IsNullOrEmpty(printerCfg.PrinterName)) pd.PrinterSettings.PrinterName = printerCfg.PrinterName;
+                    pd.Print();
+                }
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
+                }
+
+                return Event.Busy;
+            }
+        }
 
         /// <summary>Stop this operation</summary>
         public void Stop()

TBF/Rig/Output/Printers/OnePerBatch/Printer.cs

@@ -5,9 +5,11 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Threading;
+using log4net;
+using Common;
+using Common.Forms;
 using Results.Entities;
 using Results.Output.Printers.OnePerBatch;
-using log4net;
 
 namespace TBF.Rig.Output.Printers.OnePerBatch
 {
@@ -31,6 +33,10 @@ namespace TBF.Rig.Output.Printers.OnePerBatch
 		IList<Results.WMeterRsltItemSpec> testItems;
 		string footer;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
+
 
         public Printer() { }
 
@@ -43,8 +49,17 @@ namespace TBF.Rig.Output.Printers.OnePerBatch
         public override void Initialize()
         {
             ApplyConfig();
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
                 log.FatalFormat("{0} initialized: {1}", Name, this);
             }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
+        }
 
         void ApplyConfig()
 		{
@@ -150,8 +165,29 @@ namespace TBF.Rig.Output.Printers.OnePerBatch
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
+        }
 
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
+		{
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
+
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
                 if (printerCfg.Culture != Culture.system)
                 {
                     Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
@@ -182,13 +218,21 @@ namespace TBF.Rig.Output.Printers.OnePerBatch
                 }
 
                 Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
                 }
 
-		/// <summary>Run this operation</summary>
+                return Event.Busy;
-		/// <returns>Event.ResultsPrinted</returns>
+            }
-		public Event Run()
-		{
-				return Event.ResultsPrinted;
         }
 
         /// <summary>Stop this operation</summary>

TBF/Rig/Output/Printers/OnePerMeter/Printer.cs

@@ -5,9 +5,11 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Threading;
+using log4net;
+using Common;
+using Common.Forms;
 using Results.Entities;
 using Results.Output.Printers.OnePerMeter;
-using log4net;
 
 namespace TBF.Rig.Output.Printers.OnePerMeter
 {
@@ -31,6 +33,10 @@ namespace TBF.Rig.Output.Printers.OnePerMeter
 		IList<Results.WMeterRsltItemSpec> testItems;
 		string footer;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
+
 
         public Printer() { }
 
@@ -43,8 +49,17 @@ namespace TBF.Rig.Output.Printers.OnePerMeter
         public override void Initialize()
         {
             ApplyConfig();
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
                 log.FatalFormat("{0} initialized: {1}", Name, this);
             }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
+        }
 
         void ApplyConfig()
 		{
@@ -154,8 +169,29 @@ namespace TBF.Rig.Output.Printers.OnePerMeter
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
+        }
 
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
+		{
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
+
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
                 if (printerCfg.Culture != Culture.system)
                 {
                     Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
@@ -182,13 +218,21 @@ namespace TBF.Rig.Output.Printers.OnePerMeter
                 }
 
                 Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
                 }
 
-		/// <summary>Run this operation</summary>
+                return Event.Busy;
-		/// <returns>Event.ResultsPrinted</returns>
+            }
-		public Event Run()
-		{
-				return Event.ResultsPrinted;
         }
 
         /// <summary>Stop this operation</summary>

TBF/Rig/Output/Printers/PrinterStatus.cs

@@ -0,0 +1,136 @@
+///
+/// Copyright (c) 2023 Sensus Slovensko a.s.
+///
+using System;
+using System.Management;
+
+namespace TBF.Rig.Output.Printers
+{
+    public static class PrinterStatus
+    {
+        ///
+        /// See also https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-printer
+        ///
+
+        public enum DetectedErrorState : UInt16
+        {
+            Unknown = 0,
+            Other = 1,
+            No_Error = 2,
+            Low_Paper = 3,
+            No_Paper = 4,
+            Low_Toner = 5,
+            No_Toner = 6,
+            Door_Open = 7,
+            Jammed = 8,
+            Offline = 9,
+            Service_Requested = 10,
+            Output_Bin_Full = 11,
+        }
+
+        public enum ExtendedPrinterStatus : UInt16
+        {
+            Other = 1,
+            Unknown = 2,
+            Idle = 3,
+            Printing = 4,
+            Warming_Up = 5,
+            Stopped_Printing = 6,
+            Offline = 7,
+            Paused = 8,
+            Error = 9,
+            Busy = 10,
+            Not_Aavailable = 11,
+            Waiting = 12,
+            Processing = 13,
+            Initialization = 14,
+            Power_Save = 15,
+            Pending_Deletion = 16,
+            IO_Active = 17,
+            Manual_Feed = 18,
+        }
+
+        public static void GetStatus(string printerName)
+        {
+            /// Perform the search for printers and return the listing as a collection
+            var mgmtSearcher = new ManagementObjectSearcher("SELECT * FROM Win32_Printer");
+            var mgmtCollection = mgmtSearcher.Get();
+
+            foreach (ManagementObject wmiObj in mgmtCollection)
+            {
+                if (wmiObj["Name"].ToString().ToLower() == printerName.ToLower())
+                {
+                    /// Management object name fits the printer name
+
+                    var state = (ExtendedPrinterStatus)int.Parse(wmiObj["ExtendedPrinterStatus"].ToString());
+                    if (state == ExtendedPrinterStatus.Other ||
+                        state == ExtendedPrinterStatus.Unknown ||
+                        state == ExtendedPrinterStatus.Offline ||
+                        state == ExtendedPrinterStatus.Error ||
+                        state == ExtendedPrinterStatus.Not_Aavailable)
+                    {
+                        var message = string.Format("Printer '{0}' state is '{1}'", printerName, state.ToString().Replace('_', ' '));
+                        throw new ApplicationException(message);
+                    }
+
+                    var error = (DetectedErrorState)int.Parse(wmiObj["DetectedErrorState"].ToString());
+                    if (error != DetectedErrorState.No_Error)
+                    {
+                        var message = string.Format("Printer '{0}' error state is '{1}'", printerName, error.ToString().Replace('_', ' '));
+                        throw new ApplicationException(message);
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// Returns true when printer is online, without errors.
+        /// </summary>
+        /// <param name="printerName">Printer name</param>
+        /// <param name="message">Error message when printer is not online</param>
+        /// <returns>true when online, false when there are any errors or printer is not online</returns>
+        public static bool IsOnline(string printerName, out string message)
+        {
+            // TODO: Uncomment the following line and resolve problems : Unknown status/error always returned
+            // if (string.IsNullOrEmpty(printerName))
+            {
+                /// Default printer
+                message = string.Empty;
+                return true;
+            }
+
+            /// Perform the search for printers and return the listing as a collection
+            var mgmtSearcher = new ManagementObjectSearcher("SELECT * FROM Win32_Printer");
+            var mgmtCollection = mgmtSearcher.Get();
+
+            foreach (ManagementObject wmiObj in mgmtCollection)
+            {
+                if (wmiObj["Name"].ToString().ToLower() == printerName.ToLower())
+                {
+                    /// Management object name fits the printer name
+
+                    var state = (ExtendedPrinterStatus)int.Parse(wmiObj["ExtendedPrinterStatus"].ToString());
+                    if (state == ExtendedPrinterStatus.Other ||
+                        state == ExtendedPrinterStatus.Unknown ||
+                        state == ExtendedPrinterStatus.Offline ||
+                        state == ExtendedPrinterStatus.Error ||
+                        state == ExtendedPrinterStatus.Not_Aavailable)
+                    {
+                        message = string.Format("Printer '{0}' state is '{1}'", printerName, state.ToString().Replace('_', ' '));
+                        return false;
+                    }
+
+                    var error = (DetectedErrorState)int.Parse(wmiObj["DetectedErrorState"].ToString());
+                    if (error != DetectedErrorState.No_Error)
+                    {
+                        message = string.Format("Printer '{0}' error state is '{1}'", printerName, error.ToString().Replace('_', ' '));
+                        return false;
+                    }
+                }
+            }
+
+            message = string.Empty;
+            return true;
+        }
+    }
+}

TBF/Rig/Output/Printers/Zapiska/Printer.cs

@@ -5,8 +5,10 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Threading;
-using Results.Output.Printers.Zapiska;
 using log4net;
+using Common;
+using Common.Forms;
+using Results.Output.Printers.Zapiska;
 
 namespace TBF.Rig.Output.Printers.Zapiska
 {
@@ -30,6 +32,10 @@ namespace TBF.Rig.Output.Printers.Zapiska
 		IList<Results.WMeterRsltItemSpec> testItems;
 		string footer;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
+
 
         public Printer() { }
 
@@ -42,8 +48,17 @@ namespace TBF.Rig.Output.Printers.Zapiska
         public override void Initialize()
         {
             ApplyConfig();
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
                 log.FatalFormat("{0} initialized: {1}", Name, this);
             }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
+        }
 
         void ApplyConfig()
 		{
@@ -137,8 +152,29 @@ namespace TBF.Rig.Output.Printers.Zapiska
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
+        }
 
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
+		{
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
+
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
                 if (printerCfg.Culture != Culture.system)
                 {
                     Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
@@ -158,13 +194,21 @@ namespace TBF.Rig.Output.Printers.Zapiska
                 PrintResults(batch, documentName);
 
                 Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
                 }
 
-		/// <summary>Run this operation</summary>
+                return Event.Busy;
-		/// <returns>Event.ResultsPrinted</returns>
+            }
-		public Event Run()
-		{
-			return Event.ResultsPrinted;
         }
 
         /// <summary>Stop this operation</summary>
@@ -215,7 +259,7 @@ namespace TBF.Rig.Output.Printers.Zapiska
                     Footer = printerCfg.Footer,
 				};
 
-                var pd = new Results.Output.Printers.Zapiska.ZapiskaPrintDocument(batch, cfg, documentName);
+                var pd = new ZapiskaPrintDocument(batch, cfg, documentName);
                 if (!string.IsNullOrEmpty(printerCfg.PrinterName)) pd.PrinterSettings.PrinterName = printerCfg.PrinterName;
                 pd.Print();
             }

TBF/TBF.csproj

@@ -145,6 +145,7 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Deployment" />
     <Reference Include="System.Drawing" />
+    <Reference Include="System.Management" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Numerics" />
     <Reference Include="System.Security" />
@@ -1189,6 +1190,7 @@
     <Compile Include="Rig\Output\Printers\OnePerMeter\PrinterCfgCtrl.designer.cs">
       <DependentUpon>PrinterCfgCtrl.cs</DependentUpon>
     </Compile>
+    <Compile Include="Rig\Output\Printers\PrinterStatus.cs" />
     <Compile Include="Rig\Output\Printers\Zapiska\FactoryCompound.cs" />
     <Compile Include="Rig\Output\Printers\Zapiska\FactoryHeatMeters.cs" />
     <Compile Include="Rig\Output\Printers\Zapiska\FactorySingle.cs" />